This is just from memory as I am at work and supposed to be working (it's a slow day for a change!)
Each cube is Approx. 6-7" wide, 7" high, and 12-13" deep. There are six per rack. I already had my material folded in about those shapes so they would fit in a drawer. I really like being able to see all of it. I am still keeping the fat quarters in a wicker basket until I find something better.